2011年度江苏省雷电活动及雷击灾害特征

从雷暴日时间分布、区域性雷电活动时间分布、地闪时间分布等方面分析了2011年度江苏省雷电活动的时间分布特征,并从雷暴日空间分布、地闪频次空间分布等方面分析了雷电活动的空间分布特征,继而对2011年度江苏省雷电灾害的时空分布及受灾类型特征进行了分析.结果表明:2011年江苏省雷电活动峰值出现在8月,全省范围雷暴过程达11次,较往年偏多,11月出现2次大范围雷暴过程,为历史罕见;全省雷电活动空间分布总体为南多北少,江淮之间南部及苏南中东部大部分地区为雷暴高发区;雷电灾害主要出现在6—8月,办公电子设备受损案例最多,其次为家用电子设备;85%的雷击人员伤亡事故发生在农村.最后,提出了雷电防御的对策及建议.

Analysis on characteristics of lightning activities and lightningdisasters in Jiangsu province in 2011

The temporal and spatial distribution characteristics of lightning activity,including thunderstorm days,regional lightning activity and cloud-to-ground flash frequency,are analyzed based on data of Jiangsu province in 2011.The distribution characteristics and types of lightning disasters are also analyzed.The results are as follows.The peak value of lightning activities in 2011 appeared in August when 11 thunderstorm processes occurred,which were more than in past years,and there were 2 large scale thunderstorm processes in November,which were very rare in previous records.The lightning activities were generally more in the south and less in the north in Jiangsu province,and the high incidence areas of thunderstorm are the south region between the Yangtze River and the Huaihe River and the main region of the middle and east of south Jiangsu province.The lightning disasters occurred mainly between June and August,and the office electronic equipments damage cases were the biggest and the household electronic equipments damage cases were the second types of lightning disaster,and 85% of lightning casualties were in the rural areas.At last,the paper proposes the countermeasures and suggestions for lightning disaster prevention,and provides a reference for the lightning disaster prevention work of Jiangsu province.